I have been taking Dr. Best Camu Camu but have now discovered that they spray dry theirs which means a chemical is applied to speed up dehydration. This one is pure as all Paradise herbal products are know for.
Camu camu is natural vit c and is way better for you than synthetic vit C which most C's are made of.

Usually when taking whole food vitamin C or upping my dose at the onset of cold, flu symptoms, the symptoms typically subside rather quickly. Not so with my most recent bottle. Nothing happened. Also noticed that when pouring into juice, it no longer dissolves like it used to (I give it to my toddler that way). With my recent bottle, the capsule powder just clumps together in the liquid even after shaking the liquid (green tea or OJ vigorously). It only dissolves after I heat and then shake vigorously. Seems either the formula or processing method may have changed. Too bad because this go round I'm going with a different brand.